Djangoimgareaselect手动剪切头像实现方法

 
 
 
 
 
 
 
 
 
继续上传头像
 
 {% if messages %} 
 {% for message in messages %} 
 {{ message }}
 
 {% endfor %} 
 {% endif %} 
 
 {%for p in photos%} 
 

 
  继续剪切 
 
 
 {%endfor%} 
 
 
 

#coding=utf-8 
from django import forms 
class PhotoForm(forms.Form): 
 photo_name = forms.ImageField(label=u"头像") 
class HatHeadCutForm(forms.Form): 
 x1=forms.IntegerField(widget=forms.TextInput(attrs={'size': 4,})) 
 y1=forms.IntegerField(widget=forms.TextInput(attrs={'size': 4,})) 
 x2=forms.IntegerField(widget=forms.TextInput(attrs={'size': 4,}))
 y2=forms.IntegerField(widget=forms.TextInput(attrs={'size': 4,})) 
 w=forms.IntegerField(widget=forms.TextInput(attrs={'size': 4,})) 
 h=forms.IntegerField(widget=forms.TextInput(attrs={'size': 4,})) 

#coding=utf-8 
from django.db import models 
class Photo(models.Model): 
 photo_name=models.CharField(u"图片路径",max_length=255) 
 photo_thumb=models.CharField(u"图片缩略图",max_length=255) 

#coding=utf-8 
from django.core.urlresolvers import reverse 
from django.shortcuts import render_to_response, get_object_or_404 
from django.http import HttpResponse,HttpResponseRedirect 
from django.template import RequestContext 
from django.contrib import messages 
import os,uuid,ImageFile,Image 
from PhotoCut.headhat.forms import PhotoForm,HatHeadCutForm 
from PhotoCut.headhat.models import Photo 
from PhotoCut.settings import MEDIA_ROOT,HEADHAT_ABS_PATH,HEADHAT_VIR_PATH 
def index(request,templates="headhat/index.html"): 
 template_var={} 
 form=PhotoForm() 
 if request.method=="POST": 
 form = PhotoForm(request.POST.copy(),request.FILES) 
 if form.is_valid(): 
 file=request.FILES.get("photo_name",None) 
 if file: 
 p=ImageFile.Parser() 
 for c in file.chunks(): 
 p.feed(c) 
 img=p.close() 
 if img.mode != 'RGBA': 
 img = img.convert('RGBA') 
 if img.size[0]>img.size[1]: 
 offset=int(img.size[0]-img.size[1])/2 
 img=img.crop((offset,0,int(img.size[0]-offset),img.size[1])) 
 else: 
 offset=int(img.size[1]-img.size[0])/2 
 img=img.crop((0,offset,img.size[0],(img.size[1]-offset))) 
 img.thumbnail((300, 300)) 
 file_name="%s.jpg"%str(uuid.uuid1()) 
 img.save(os.path.join(HEADHAT_ABS_PATH,file_name),"JPEG",quality=100) 
 messages.info(request,u"上传成功！") 
 p=Photo.objects.create(photo_name=file_name) 
 p.save() 
 return HttpResponseRedirect(reverse("headhat_cut",kwargs={"id":p.id})) 
 template_var["form"]=form 
 return render_to_response(templates,template_var,context_instance=RequestContext(request)) 
def cut(request,id,templates="headhat/cut.html"): 
 template_var={} 
 p=get_object_or_404(Photo,pk=int(id)) 
 if not p.photo_name: 
 messages.info(request,u"请先上传图片！") 
 return HttpResponseRedirect(reverse("headhat_index")) 
 template_var["vir_path"]=os.path.join(HEADHAT_VIR_PATH,p.photo_name)
 form=HatHeadCutForm() 
 if request.method=='POST': 
 form=HatHeadCutForm(request.POST) 
 if form.is_valid(): 
 try: 
 img=Image.open(os.path.join(HEADHAT_ABS_PATH,p.photo_name)) 
 except IOError: 
 messages.info(request,u"读取文件错误！")
 data=form.cleaned_data 
 img=img.crop((data["x1"],data["y1"],data["x2"],data["y2"]))
 img.thumbnail((50, 50)) 
 file_name="%s_%s"%(os.path.splitext(p.photo_name)[0],"_50_50.jpg") 
 img.save(os.path.join(HEADHAT_ABS_PATH,file_name),"JPEG",quality=100)
 p.photo_thumb=file_name 
 p.save() 
 messages.info(request,u"剪切成功！") 
 return HttpResponseRedirect(reverse("headhat_show")) 
 else: 
 messages.info(request,u"请剪切后 再保存！") 
 template_var["form"]=form 
 return render_to_response(templates,template_var,context_instance=RequestContext(request)) 
def show(request,templates="headhat/show.html"): 
 template_var={} 
 photos=Photo.objects.all() 
 template_var["path"]=HEADHAT_VIR_PATH 
 template_var["photos"]=photos 
 return render_to_response(templates,template_var,context_instance=RequestContext(request))